Fitment questions?
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Product details
Black SX6R six-piston calipers and 15-inch GT discs form this Roadster Shop front package. Dynamic lug-drive hats allow the rotors to move independently as temperatures change, using wear clips and a retaining ring instead of conventional rotor-to-hat bolts. Wilwood Engineering, based in Camarillo, California, has designed and manufactured disc brake systems since its founding by Bill Wood in 1977. The range spans calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized applications.
Technical Details
Calipers and pads
- Calipers: SX6R; 6 pistons
- Caliper finish: Black Powder Coat
- Body construction: Forged aluminum
- Pistons: stainless
- Mounting: radial
- Hydraulic inlet: 1/8-27 NPT
- Included pad compound: BP-10
- Listed piston bore sizes: 1.75 / 1.38 / 1.38 in
Kit contents and separate parts
- Manufacturer part number: 140-18368
- Supply: one brake kit; components for both sides of the axle
- Mounting hardware: included
- Hubs: not included
- Spindles, master cylinder and brake booster: not included
- Brake flexlines: not included
Installation documents
Rotors and mounting dimensions
- Rotors: 15.00 in; 381 mm diameter x 1.25 in; 31.75 mm thick; vented Spec-37 Iron
- Friction faces: GT Slotted
- Rotor coating/finish: Black Electro Coat
- Internal vanes: 72 curved
- Hats: Aluminum; Type III Anodize; 0.868-inch hat offset
Fitment & Compatibility
This SX6R configuration requires the Roadster Shop Mustang II upright and the five-on-4.75-inch hub application described in DS-1703. Confirm the precise hub and hat dimensions before ordering; the original vehicle's model year does not identify this custom assembly. The 15-inch rotors attach through dynamic drive lugs and wear clips, secured by a retaining ring. Follow the guide's snap-ring engagement checks and the prescribed steering-arm bracket location. Retain compatible hubs and supply spindles and flexlines separately. Check wheel clearance for the rotor, large caliper body and hose routing. Nominal minimum wheel diameter: 19 in; 482.6 mm. The linked wheel-clearance diagram must confirm barrel and spoke clearance; wheel diameter alone does not guarantee fit.
WARNING: This product can expose you to chemicals including Arsenic, Cadmium, Chromium (Hexavalent compounds), Lead, Nickel, Cobalt and Antimony Trioxide which are known to the State of California to cause cancer or other reproductive harm. For more information go to www.p65warnings.ca.gov.
Our team at PMB Performance draws on 20+ years of brake and restoration work. We can help you review the application requirements before you assemble the system.
